Dozens of vehicles, including semitrailers, were involved in a deadly crash in heavy fog Wednesday on Interstate 5 in Oregon.

One person was killed in the multi-vehicle crash that happened in the southbound lanes of the interstate north of Eugene, Oregon State Police told KOIN-TV. About 60 vehicles, including up to 20 semitrailers, were involved in the crashes Wednesday morning that spanned more than a mile and led to the closure of that part of the interstate.

The Department of Environmental Quality responded to address leaking fluids from six of the semitrailers, police said. School buses from Eugene were reportedly sent to take several dozen stranded motorists to a nearby truck stop.

OREGON GOVERNOR DEBATE: DRAZAN HITS KOTEK AS 'ORIGINAL DEFUND THE POLICE CANDIDATE'

Authorities believe the fog led to the crash, police said.

Oregon Interstate 5 crash

The scene where one person was killed in a multi-vehicle crash on Interstate 5 north of Eugene, Oregon, on Oct. 19, 2022. Oregon State Police say the crashes in the southbound lanes of the interstate involved dozens of vehicles. (Oregon State Police via AP)

DRIVE-BY SHOOTING NEAR PORTLAND HIGH SCHOOL INJURES 2 STUDENTS

Transportation officials said later the interstate closure in the area had expanded because of two more multi-vehicle crashes Wednesday afternoon.

"BE PATIENT & SLOW DOWN," transportation officials said in a tweet.

CLICK HERE TO GET THE FOX NEWS APP

Traffic was diverted to Highway 99E and drivers were urged to use other routes.